单项选择题

The emphasis on the importance of education has spurred scientific research.

A．encouraged
B．fastened
C．raised
D．initiated
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单项选择题
Academic records cannot be duplicated.
A．borrowed
B．purchased
C．copied
D．rewritten
单项选择题
John was irritated by the necessity for polite conversation.
A．troubled
B．annoyed
C．threatened
D．aroused
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